I2C EEPROM AT24 driver - EEPROM Read Write
This example application shows how to use the AT24 driver to perform read and write operations on AT24 series of EEPROM.
Description
- This example uses the AT24 driver to communicate with I2C based External AT24CM0 series EEPROMs to perform write and read operations in Bare-Metal/ RTOS environment.
Downloading and building the application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.
Path of the application within the repository is apps/driver/i2c_eeprom/at24/at24_eeprom_read_write/firmware .
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| sam_a5d2_xult.X | MPLABX project for SAMA5D2 Xplained Ultra Evaluation Kit |
| sam_a5d2_xult_freertos.X | MPLABX project for SAMA5D2 Xplained Ultra Evaluation Kit |
Setting up AT91Bootstrap loader
To load the application binary onto the target device, we need to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to configure, build and run bootstrap loader project and use it to bootstrap the application binaries.
Setting up the hardware
The following table shows the target hardware for the application projects.
| Project Name | Board |
|---|---|
| sam_a5d2_xult.X sam_a5d2_xult_freertos.X | SAMA5D2 Xplained Ultra Evaluation Kit |
Setting up SAMA5D2 Xplained Ultra Evaluation Kit
Addtional hardware required
- One EEPROM 3 Click board
- mikroBUS Xplained Pro board
Setting up the board
- Install the EEPROM 3 Click board on to the mikroBUS Xplained Pro board
- Connect the mikroBUS Xplained Pro board to the EXT1 header
- Short jumper JP2 (DEBUG_DIS)
- Connect the Debug USB port on the board to the computer using a micro USB cable
Running the Application
- Build the application using its IDE
- LED is turned ON when the data read from EEPROM matches with the written data
Refer to the following table for LED name:
| Board | LED Name |
|---|---|
| SAMA5D2 Xplained Ultra Evaluation Kit | RGB_LED(Green) |